File Format of CTD data

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CTD data files consist of header part (first 9 records) and data part. The following elements are separated by comma in each record.

(a) Header part
Record Information
Record No. Element

Rec-1 Ship name [listed in Table], cruise number and format code. Cruise number is identified with the year and the month. Format code is 'R2.1'.

Rec-2 Station number and cast number. Station number is given by the ship code [listed in Table] suffixed with four digits.

Rec-3 The number of data records.

Rec-4 Date(year/month/day) and time at the bottom of the hydrographic cast in the Japan Standard Time(JST), which is nine hours ahead of the Coordinated Universal Time(UTC).

Rec-5 Latitude and longitude at the bottom of the hydrographic cast with degrees, `-', minutes, `.', hundredth part of minutes.

Rec-6 Water depth at the bottom of the hydrographic cast and sounding flag [listed in Table].

Rec-7 Corresponding station number of the subsurface current data and sub-station number.

Rec-8 Headers for data columns.

Rec-9 Units for data columns.

**Record Information**
Record No.	Element
Rec-1	Ship name [listed in Table], cruise number and format code. Cruise number is identified with the year and the month. Format code is 'R2.1'.
Rec-2	Station number and cast number. Station number is given by the ship code [listed in Table] suffixed with four digits.
Rec-3	The number of data records.
Rec-4	Date(year/month/day) and time at the bottom of the hydrographic cast in the Japan Standard Time(JST), which is nine hours ahead of the Coordinated Universal Time(UTC).
Rec-5	Latitude and longitude at the bottom of the hydrographic cast with degrees, `-', minutes, `.', hundredth part of minutes.
Rec-6	Water depth at the bottom of the hydrographic cast and sounding flag [listed in Table].
Rec-7	Corresponding station number of the subsurface current data and sub-station number.
Rec-8	Headers for data columns.
Rec-9	Units for data columns.

(b) Data part

Data are described at every 1X10^4 Pa. The meaning of attached flags is shown in table.

Record information
Record No. Elements

below Rec-10 Pressure, Temperature, Salinity, Dissolved oxygen with each flag [listed in table.] and the number of data used for averaging.

**Record information**
Record No.	Elements
below Rec-10	Pressure, Temperature, Salinity, Dissolved oxygen with each flag [listed in table.] and the number of data used for averaging.

Ship codes.
Ship Name CALL SIGN Ship Code BT Code AERO CODE

Kofu Maru JDWX KH th 1 2 47 002

Ryofu Maru JGQH RF tf 1 2 47 646

Keifu Maru JPBN KS ts 1 2 47 000

Chofu Maru JCCX NC tc 1 2 47 001

Seifu Maru JIVB SM tm 1 2 47 003

**Ship codes**.
Ship Name	CALL SIGN	Ship Code	BT Code	AERO CODE
Kofu Maru	JDWX	KH	th	1 2 47 002
Ryofu Maru	JGQH	RF	tf	1 2 47 646
Keifu Maru	JPBN	KS	ts	1 2 47 000
Chofu Maru	JCCX	NC	tc	1 2 47 001
Seifu Maru	JIVB	SM	tm	1 2 47 003

Sounding flag of water depth in CTD, XCTD and BT data.
Flag No. Definition

1 Sounding by echo-sounder (not corrected)

2 Sounding by echo-sounder (corrected)

5 Water depth measured by CTD and altimeter

6 Water depth measured by BT or XCTD submersible

9 No sounding

**Sounding flag of water depth in CTD, XCTD and BT data**.
Flag No.	Definition
1	Sounding by echo-sounder (not corrected)
2	Sounding by echo-sounder (corrected)
5	Water depth measured by CTD and altimeter
6	Water depth measured by BT or XCTD submersible
9	No sounding

Data flag in CTD, XCTD and BT data.
Flag No. Definition

2 Acceptable measurement.

3 Questionable measurement.

4 Bad measurement.

6 Interpolated over >2X10^4 Pa interval.

7 Despiked.

9 Not sampled.

Flag No.	Definition
2	Acceptable measurement.
3	Questionable measurement.
4	Bad measurement.
6	Interpolated over >2X10^4 Pa interval.
7	Despiked.
9	Not sampled.